Trail Running calendar near Builth Wells 2026-2027

A multi-distance trek and trail event on the Gower Peninsula based at Penrice Castle, offering camping, GPS-tracked routes, covered rest stops, catering, medical support, and finisher rewards across several distances.

Trail races on the private Merthyr Mawr Estate within Merthyr Mawr Warren National Nature Reserve, featuring a 12K course and a new 40K route that extends along the Glamorgan Heritage Coast.

A guided traverse of all 14 Snowdonia peaks over 3000 ft, about 50 km with 4000 m ascent, offered as a 20 hour or 2 day guided challenge with run and walk pace options and low ratio mountain leadership.

Three point to point ultramarathon distances along the Wales Coast Path from Rhossili Bay to Cardiff Bay. Marked coastal and forest routes with checkpoints, GPS tracking, a compulsory kit list and drop bag access on the 100 mile course.

Outdoor obstacle and mud run events at Huntley Estate in July 2026, including an obstacle race, a mostly-obstacle-free mud run, and a 1 km kids race; medals and event shirts are provided for participants and marshals.

An endurance event at Huntley Estate on July 18, 2026 that pairs eight physical strength tests with 1 kilometre off-road runs after each test, with official times, medals, age group categories, parking and space for spectators.

An obstacle 5k at Worcester Racecourse on 18 July 2026 with mixed grass and pavement sections. Participants must be 13 or older, there is a £50 minimum fundraising target, and onsite facilities include toilets and refreshments.

A mountain running event on 18 July 2026 covering 15.35 km with 994 m ascent. Entrants must be 18 or older and have mountain running experience.

Multi-distance runs along the Wye Valley Greenway, including a long lit tunnel section. Mostly flat routes on former railway track with feed stations, clear marking and event medals for 5 km or longer.

Two trail races in Aymestrey, Herefordshire, both climbing to the Iron Age hillfort at Croft Ambrey. Routes are fully marked with water stations and a separate juniors 2 km race with medals.

A traditional off road fell race of about 4 miles and 1000 ft of ascent on Exmoor, running from Bossington National Trust car park to Selworthy Beacon and back. Self navigation is required and prizes are awarded in gender and age categories..

A Trail 10k at Llys y Fran Lake with varied terrain, lakeside and woodland sections, chip timing and a finisher's medal. The race is the second event in the 2026 RTT Series and includes marked routes and water stations.

A new 10 km trail from Ross on Wye along the River Wye with off road terrain and riverside wildlife. Entry is £14.99 via PayPal, minimum age 15, and all finishers receive a bespoke medal.

A fully guided three day loop through northern Snowdonia covering just over 100 km, about 9,000 m of ascent and 47 summits. Small groups return to Capel Curig each night with daily support and refuelling.

A short fell race of 5.54 km with 315 m of ascent, run on a partially marked route that requires navigational skill and prior fell-running experience. Entry on the night costs £3 and the event is insured by the WFRA.

A 100 km self navigation ultramarathon across the Brecon Beacons with 3178 m of ascent, following the Beacons Way. Entrants must meet qualifying criteria including prior 50 mile ultramarathon experience and map and compass skills, places ar..

A 100 mile self navigation ultramarathon across the Brecon Beacons on 25 July 2026 with 6143 m ascent, live GPS tracking and 10 checkpoints. Entrants must meet experience and kit criteria and places are limited to 250.

A multi-distance run along a disused railway between Ironbridge and Bridgnorth, offering distances from 9 miles to 37 miles with 9.4 mile laps and aid stations every 4.7 miles.

A multi-distance trail ultramarathon in the Brecon Beacons near Abergavenny on 25 to 26 July 2026. Events range from 12 km to 110 km, include UTMB Index categories, camping and on-course medical support.

A Britney themed 7 hour Time Challenge at Dare Valley Country Park offering distances from 3 km up to ultra and 50 km. Aid tables, medals and goody bags are provided, with free parking, toilets and a cafe on site.